Music-leaf turner



J. 0. GEMSEY. MUSIC LEAF TURNER, v APPLICATION FILED JAN.2, 1920.1,353,582, PatentetiSept. 21, 1920 2 SHEETS-SHEET I.

J. 0. Oemsgg 5 QQ@WM ,4 TTOR/VEYS .1. 0. GEMSEY.

MUSIC LEAF TURNER.

APPLICATION mm m HEETS-SHEET 2.

A TTURNEYS WITNESSES JULIUS O. GEMSEY, OF MONTEVIDEO, MINNESOTA.

MUSIC-LEAF TURNER.

Specification of Letters Patent.

Patented Sept. 21, 1920.

Application filed January 2, 1920. Serial No. 348,752.

T 0 all whom it may concern Be it known that I, JULiUs O. GnMsnY, acitizen of the United States, and a resident of Montevideo, in thecounty of Chippewa and State of Minnesota, have invented certain new anduseful Improvements in Music-Leaf Turners, of which the following is aspecification.

My invention relates to music leaf turners, and particularly to a deviceof this character which is adapted to be applied to a music stand of thestandard construction.

The purpose of my invention is the provision of a music leaf turner ofthis character which can be readily adjusted to fit the standirrespective of its height, the turning mechanism being adapted to beactuated by the foot of the operator for successively turning the leavesas they are played.

I will describe one form of music stand of conventional form and oneform of leaf turning mechanism embodying my invention, and will thenpoint out the novel features thereof in claims.

In the accompanying drawings:

Figure 1 is a view showing in front elevation the conventional form ofmusic stand having applied thereto one form of leaf turning mechanismembodying my invention;

Fig. 2 is a transverse sectional view taken on the line 22 of Fig. 1.

Fig. 3 is a vertical sectional view taken on the line 3-3 of Fig. 2.

Figs. 1 and 5 are detailed views of the mechanism shown in the precedingviews.

Similar reference characters refer to similar parts in each of theseveral views.

Referring specifically to the drawings and particularly to Fig. 1, Ihave here shown the conventional form of music stand as comprising atripod T which supports and is foldable upon a pedestal P. The pedestalP comprises a tubular section 15 and a rod 16 which is telescopicallyassociated with the latter and is adapted to be locked in any adjustedposition by means of a set screw 17. The rod 16 supports upon its upperend a music rack designated generally at The leaf turning mechanismembodying the subject matter of my invention comprises a frame F whichis rigidly supported upon the rod 16 by means of a clamp C, as clearlyshown in Figs. 2 and 3. Theframe F is of substantially U-shapedformation with the confronting sides provided with ribs 18 upon which aguide bar 19 is slidably mounted. As shown in F ig. 3, the bar 19 isformed with a longitudinally extending groove which is adapted toslidably receive an actuating bar 20. The bar 20 is adapted to be movedlongitudinally within the guide bar 19 for effecting the successiveturning of a plurality of leaf turning frames A. As shown in Figs. 2 and3, each frame A is provided with a depending portion 21 journaled in ayoke Y and formed at its lower end with a horizontally disposed finger22. As shown in Fig. 1, the yoke Y comprises a bar 23 and a U-shapedportion 21 both of which are perforated at corresponding points torotatably receive extensions 21. Adjacent the opposite ends of the bar23, forwardly extending pins 25 are provided which are adapted to fitwithin suitable openings formed in the lower part of the music rack B.As hown in Fig. 1, the yoke Y spans the space between the lower portionsof the music rack and being rigidly connected thereto, forms aneffective support for the turning frames A.

As previously stated, the actuating bar 20 is designed to effect asuccessive turning of the frames A. In the present instance, thisfunction is effected by a shoulder 26 provided on the inner side of thebar 20 by recessing a portion of the bar, as clearly shown in Fig. 5. Asshown in Fig. 2, the fingers 22 of the frames A are of progressinglyincreasing lengths, with the longest finger at the extreme left. The bar20 is actuated to cause the shoulder 26 to successively engage thefingers by a leaf spring 27 secured to the bar and to a rod 28, thelower end of which latter is telescopically fitted within the tubularend of a bell crank lever 29. As shown in Fig. 1, the lever 29 isfulcrumed at 30 upon a bracket 31 which securely embraces the tubularportion 15 of the standard. The rod 28 may be locked in any adjustedposition within the lever 29 by a set screw 32. The lever 29 isoperatively connected to a foot pedal 33 by means of a link 34. The footpedal 33 is pivoted upon the base of an upright 35 which is fittedwithin the lower end of the tubular portion 15 of the pedestal P.

The lever 33 is biased to an elevates position by means of a spring 36so that in the normal position of the lever, the mechanism comic-tingthe same to the actuating bar causes the latter to occupy the positionshown in'Fig; 2. When the lever 33'is dew V advance of the shoulder 26.Now when the foot lever 33 is depressed, to effect a sliding of the bar20 to the left, the shoulder 21 is caused to engage the finger andtothereby rotate the corresponding extension 21 within the yolre Y thusmoving the corresponding frame A from right to left and turning thesheet of music supported by the latter. As the finger is turned by theshoulder 26, it

thus engages the latter as it swings about the extension 21 as a centerand thus moves downwardly beneath the shoulder and out of contact withthe bar. finger is free of the bar, the spring 21' effects a rearwardmovement of the bars 19 and 20 thus causing the bar 20 to abut theadjacent finger. As the bar 20 is returned to its normal position underthe act-ion of the spring 36 it slides over the end of the finger sothat when in its final normal position, such finger engages the bar at apoint in advance of the shoulder 26. It will there fore be seen thatupon again moving the bar 20 to the left the next turning finger isretatedto efi'ect a turning of the next leaf frame. This operation issuccessively repeated until all of the frames A have been turned, itbeing understood that the frames are returned to their normal positionmanu ally and independently of the actuating bar.

'Although I have herein shown and describ'ed only one form of leafturning mechanism embodying my invention, it is to be understood thatvarious changes and modification's'may be made herein without de partingfrom the spirit of the mventlon and the spirit and scope of theappendedfclaims,

Havingrdescrihed myinvention, what I claim is :1 r V 7 v1. A 'music leafturner comprising leaf turning frames mounted for. oscillatory movement,eccentrically disposed fingers formed on said frames, said fingers beingof progressively increasing lengths, a guide bar supported for movementtoward the fingers, an actuating bar slidably fitted within the. guidebar, a shoulder formed 'on As soon as the said actuating bar, means forbiasing said' bar toward said fingers, and actuating means for effectinga reciprocating move ing lengths, a frame, a guide bar slidable.

laterally in the frame, an actuating bar slidable lon itudinally in theguide bar, a I

spring secured to the actuating bar for biasing the bars toward saidfingers, a shoulder formed on the actuating bar, and foot operativemeans connected to said spring for shifting the actuating barlongitudinally within the guide bar to cause said shoulder tosuccessively engage and turn said fingers.

8. A music leaf turner comprising a yoke, leaf turnin frames pivotedwithin the'yolie. eccentrically disposed fingers formed on the frames,a" frame, a guide bar slidable lat-' erally within the frame, anactuating bar slidable longitudinally within the guide bar,

'manually' operable means for oscillating said lever to effect areciprocatlon of the actuating bar.

l. In combination, an' extensible ,music stand, leaf turning mechanismcomprising a yoke secured to the music rack of said stand, leaf turningframes pivotally mounted in said yoke, fingers eccentrical ly mounted onsaid frames, said fingers being of graduating lengths, a frame securedto. the standard of said music stand and adjustable thereon. a guide barmovable laterally witl 'n the frame, an actuating bar slidable withinthe guide bar, a shoulder formed on said actuating bar, a spring securedto the actuating bar for biasing said bars toward said fingers, a bellcrank lever. adjustably supported on the standard of the music stand, arod extensibly associated with said lever and connected with saidspring, an up-right said bell crank lever and foot lever, and a.

p 1 sprlng IOI' biasing the foot lever to a prede termlnedposition.

JULIUS O. GEMSEY.

